US PATENT SUBCLASS 204 / 266
.~.~.~.~.~ Gas withdrawal

Current as of: June, 1999
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204 /   HD   CHEMISTRY: ELECTRICAL AND WAVE ENERGY

193  DF  APPARATUS {5}
194  DF  .~ Electrolytic {11}
242  DF  .~.~ Cells {10}
252  DF  .~.~.~ Diaphragm type {6}
263  DF  .~.~.~.~ With feeding and/or withdrawal means {3}
266.~.~.~.~.~ Gas withdrawal

DEFINITION

Classification: 204/266

(under subclass 263) Electrolytic cells provided with means to withdraw a gas from the cell chamber.

(1) Note. For gas withdrawal means for cells, see also this class, subclasses 247, 256, 258, 270, and 278.